Hajratusyaqqila, R.; Agustin, Z. R.; Fawziyah, R.; Maulida, F. A.; Candraningrum, R. G. S. Journal Review: The Effect of Milk Type, Extract Addition, Starter Concentrate, and Fermentation Time on PH and Lactid Acid Bacteria in Kefir. JFAP 2026, 6, 225-239.